Rotary valve



July 2l, 1925.

C. J. IBERTHEL ROTARY VALVE Fired 'March 1v. 1922 2 Sheets-Sheet l l ATTORNE Y.

July 21, 1925. l

'C. J. BERTHEL ROTARY VALVE' Filed March 17. 1922 2 Sheets-Sheet 2 j A9la /7/ l i f@I l ATTORNEY.

' Patented `luly 21, 1925..

UNrrED .t'IUVrES4 PATENT, OFFICE.

l marais CHARLES J'. BERTHFL, 0F CANTON, OHIO.

ROTARY VALVE.

` Application filed March 17, 1922. Serial No. 544,503.

To all whom t may conce/rfa:

Be it known that l, GHARLEs J. BERTHEL,

a citizen of the United States, residing at Canton, in the county ofStark and State of Qhio, have invented `certain new and usefulImprovements in Rotary Valves, of which the following is aspecification.

This invention relates to internal combustion motors, and has forv oneof its objects to provide `a device of this character of improvedlconstruction and increased simplic ity, and eiliciency.

Another object of the invention is to pro vide `a device of thischaracter including a combined cylinder and valve which may be insertedor removed without disturbing the piston and other parts.

Another object of the invention is to pro` vide a device of thischaracter constructed without spring controlledvalves, and thereforeoperates practically noiseless.

With these and other objects in view the invention consists in certainnovel fea-tures of construction as hereinafter shown and i described`and then specifically pointed out- Fig. 5 is a vertical section of thecombined cylinder and reciprocating valve in section on the line 5 5 ofFigure 3, looking in the u direction of the arrow above the ligure, and

Fig. 6 is asimilar viewlooking in the direction of the arrow below theFig. 3.

Fig. 7 is an enlarged sectional detail illustrating the Vmanner ofsupplying the lubricant to the moving parts.

rlhe improved motor comprises an enclosing shell or casing 10 having anencircling cooling water space or chamber 11, and extended at one end toform the crank case, a portion of which is shown at 12, and with anannular seat 13 at the upper end. AA

head member, represented as a whole at 14, bears upon the upper end ofthe shell and nels 18 over the seat 13, thus forming a closureto theseat.

The head memberrlvcontains the usual spark plug representedconventionally at 15.M

Disposed within the shell Vand fittingthe `same gas ti glit, is acombined rotative valve vand piston 16, extending'attheuppereiid into acavity within thehead member 1/1 and with an encircling rib 17engagingfilil the channel 13. By this means the member A16 is rotativelysuspended `within thelshell 10, and may be removed therefrom rljfdesposited therein when the head Ymembenlfl" ism Formed in theinner wall ofmember'l and at diainetrically opposite point "are guide channels, eachconsisting of ap 18 extending in parallel relation toftl gitudinal axisof the member 16 an amper?" tion 19 directed obliquely to thelongitudinal airis ofthe member 16.

- The upper ends of the longitudinally directed portions 18 of theguide" channels valve, to enable the piston and its rollers to beinserted and removed. i "f The piston of the improved motor is1represented as a whole at 20 and includes wan open through the upper end ofth'e cylinlder'' intermediate transverse partition" ioiffdiae' phragm 21whereby an explosionfchamber 22 is produced and with bearings 23"forltheconnecting rod of the motor.

Mounted on the piston near its'ppeir end y 2/1 operating constantly inthe Aguid 19. The intake for the explosive"gasA is located atdiametrically opposite pointslarerollers* at near the upper partof?the""sliell10,V while the exhaust port 26 is locatedfi'ntermediatethe shell, preferably*diametrically opposite to the intake port 25`f'ff"The combined valve and Icylinder `rnfeinber 23 is provided with anintake `port"` 2f7 and an exhaust 28 at different pointscircumfenyentially and likewise at *diiierenupoiiits longitudinally of the memberV116', stlliat when the member 16 is disposed lin"`oi`i"efpo`si tion theintake port 26 offtheshell110` willm register with the intakeport12moffthe valve member, and when the nfi'eiiiber 1]6 ismdisposed iiianother position f'tlieVen-hauzst port 28 of the valve member willregisterwith the exhaust port 26 of `th`e"slie`l`l. fl The guidechannels 18-19 are so arranged and proportioned, that when the piston isat the upper enol of its stroke, or located as shown in F ig. 1, therollers 24 will be in the upper or longitudinally directed portions 18of the guide channels and will dispose the port 27 in registeringrelation to the intake port 25 and likewise' dispose the discharge port28 of the member 16 spaced from the efhaust port 26 or with the exhaustcut o By this arrangement while the piston is moving through the firstpart of its up or compression stroke the rollers 24 travel in the shortoblique portions 19 of the guide.

vchannels and quickly rotate the valve 16 and cut ofil the intake 25 andthe exhaust 26.

During the remainder of the compression. stroke the rollers 24 travel inthe longitudinal portions 18 of the guide channels and,l hold both partsclosed to enable the piston to produce. the requisite compression of thegas in the cylinder. At the first part of the down or power stroke theex plosion occurs, and the rollers 24 traveling in the horizontalportion 18 of the guide channels hold the sleeve valve stationary withthe intake and exhaust both cut off.

-During this. portion of the stroke the expansion occurs and the pistonis forced downwardly.

then the rollers 24 reach the inclined or oblique portions 1 9` of theguidev channels, thesleeve valve is suddenly rotated to register theexhaust ports 26-28- and 28', during the time the rollers are in theoblique portions of the channels, and at` the same time.

open the intake to permit a fresh charge of gas to enter the cylinder.The period of timeduring which the exhaust is open is so short and theoscillation of the valve so rapid, that the inflow of fresh gas doesnot. affect the action. At the first. part. of the return stroke, orwhile the rollers24are passing upwardly through the oblique portions 19of the guide channels, the intake and exhaust are closed; andthe'continued movement of the piston again compresses the gas and theexplosion takes place at theend of the compression stroke, and theoperation is repeated.

The piston 2O isprovided with the usual packing rings 29, as shown.

Formedthrough the head member 14 is an oil duct 3() leading to the upperface of the rib 1 7to convey the lubricant to themember 16 and with abranch duct 3() communieating with anl opening at the upper end of thechannels 18, to convey the lubricant to the piston and the valve.4 Eachside of the motor may. be provided with a set of the oil ducts, ifrequired.

The improved device is simple in construction, can be inexpensivelymanufactured and of any size required, andgcontaining few parts, and allthe moving parts can be machined at small expense to render the jointsgas tight.

The preferred embodiment of the invention is disclosed in the drawingsand set forth in the speciiication, but it will be understood thatmodifications within the scope of the. claimed invention may be made inthe construction without departing from the principle of the. inventionor sacrificing any of its advantages.

Having thus described the invention what isclaimed as new is 1. In aninternal'y combustion motor, a cylindrical shell having. intake andexhaust ports spaced longitudinally .of the shell a distance. equal tothe stroke of the` piston, a cylindrical valye mounted ifor oscillationwithin the shell and having ports. which register respectively with saidintake and exhaust. ports when the valve is in one position, said. valvehaving inwardly opening guide channels with the major portion of eachchannel extending longitudinally of the valve and communicating minorportions extending obliquely to the major portions, a piston within thevalve and movable longitudinally of the shell and itsvalve and held fromturning therein, and with a port registerable with the exhaust portvwhen the piston. is in its lower position, and projections carried bythe piston and constantly engaging in the guide channels, whereby themovement of the piston operates to hold the valve from oscillationduring. the major part of its stroke and rotates it during the minorpart. of its stroke.

2. In an internal combustion motor, a cylindrical shell having intakeand exhaust ports spaced longitudinally of the shell a .distance equalto thestroke of. the piston, a cylindrical valve. mounted foroscillation within the. shell and having ports which registerrespectively with said intake and exhaust ports when the .valve is inone position,

a piston within the valve and movable longitudinallyof the shell auditsvalve and held from turning therein and with a port registerable withthe exhaust port when the piston is in its lower. position, and meansoperative by the movement of the piston for oscillating the valveinonedirection at the commencement ofthe compression stroke to hold` theintake and exhaust poorts closed during the compression stroke and themajor portion of the power stroke andoscillating the valve in the otherdirection as the piston approaches the terminal of the power stroke,

to rapidly open and close the intake and exhaust ports.

Intestimony whereof, I atlix my signaturev h creto.

CHARLES J. BERTHEL.

